# Node-red flow for temperature reading

**URL:** <https://discourse.nodered.org/t/node-red-flow-for-temperature-reading/95146>\
**Category:** General\
**Created:** [5 February 2025 10:37 UTC](https://discourse.nodered.org/t/node-red-flow-for-temperature-reading/95146 "2025-02-05T10:37:45Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![ninad](https://avatars.discourse-cdn.com/v4/letter/n/7ba0ec/32.png) [@ninad](https://discourse.nodered.org/u/ninad)\
**Post date:** [5 February 2025 10:37 UTC](https://discourse.nodered.org/t/node-red-flow-for-temperature-reading/95146/1 "2025-02-05T10:37:45Z")

</div>

connected a digital controller which is connected to PT100 temp. sensor,  
The controller in then connected to RS485 converted to USB, THE USB IS CONNECTED TO REVOLUTION PI CONNECT S  
Now I am trying to data log the temperature reading through node red.  
I am stuck in the "serial-in" node as well "modbus read"  
How to establish the communication ?

---

<div class="post-metadata">

**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [5 February 2025 11:11 UTC](https://discourse.nodered.org/t/node-red-flow-for-temperature-reading/95146/2 "2025-02-05T11:11:05Z")

</div>

Welcome to the forum @ninad.

I see your visit was rather rushed, perhaps you didn't have time to do any research.  
There may be clues [here](https://discourse.nodered.org/search?q=pt100)

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [6 May 2025 11:11 UTC](https://discourse.nodered.org/t/node-red-flow-for-temperature-reading/95146/3 "2025-05-06T11:11:56Z")

</div>

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.